MolluscaBase taxon details
original description
Ihering, H. von. (1907). Les mollusques fossiles du Tertiaire et du Crétacé supérieur de l'Argentine. <em>Anales del Museo Nacional de Buenos Aires.</em> ser. 3, 7: xiii, 1–611, 18 pls., available online at http://www.biodiversitylibrary.org/item/50857
page(s): p. 367.; note: Introduced by Ihering (1907:367) as new subspecies, with a reference to Ameghino, 1906, where it is listed as "Turritella ambulacrum var. pyramidesia Ih[ering]" without further descripti... Introduced by Ihering (1907:367) as new subspecies, with a reference to Ameghino, 1906, where it is listed as "Turritella ambulacrum var. pyramidesia Ih[ering]" without further description or systematic overview.
[details]
additional source
Ameghino, F. (1906). Les formations sédimentaires du Crétacé supérieur et du Tertiaire de Patagonie. <em>Anales del Museo Nacional de Buenos Aires.</em> Series 3, Volume 8, pp. 568, 2 pls., available online at https://www.biodiversitylibrary.org/page/14617697
page(s): p. 256. [details]